The first Jovian moons were discovered by

A) Galileo
B) Tycho
C) Huygens
D) Cassini


A

Physics & Space Science

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Projectile Motion: A girl throws a rock horizontally, with a velocity of 10 m/s, from a bridge. It falls 20 m to the water below. How far does the rock travel horizontally before striking the water, assuming negligible air resistance?

A. 14 m B. 16 m C. 20 m D. 24 m

Physics & Space Science

What is the ionosphere?

A) a layer of the atmosphere that is above the exosphere B) a layer of the atmosphere characterized by the presence of ozone C) a portion of the thermosphere in which the gas is ionized D) a portion of the troposphere in which ions are common

Physics & Space Science

The magnitude scale

a. originated just after the telescope was invented. b. can be used to indicate the apparent intensity of a celestial object. c. was devised by Galileo. d. is no longer used today. e. was used to determine the rate of precession.

Physics & Space Science

?Instructions: On occasion, the notation will be a shorthand notation for .

? ? Exhibit 3-2 A child starts at one corner of a cubical jungle gym in a playground and climbs up to the diagonally opposite corner. The original corner is the coordinate origin, and the x, y and z axes are oriented along the jungle gym edges. The length of each side is 2 m. ? ? Use this exhibit to answer the following question(s). Refer to Exhibit 3-2. What is the child's distance from her starting position? A. 2.8 m B. 3.5 m C. 6.0 m D. 6.9 m E. 12.0 m

Physics & Space Science